Katz is the executive producer of the hit television series 24, which aired original episodes on the Fox Network from 2001 to 2010.

Prior to his work on 24 he created, wrote, and executive produced the American sci-fi/comedy television series Special Unit 2, which aired original episodes for two seasons on UPN from April 2001 through February 2002.

[citation needed][clarification needed] Also for 24, he won the Writers Guild of America Award for Best Screenplay – Episodic Drama for the Season 2 episode Day 2: 7:00 p.m. - 8:00 p.m. Katz is a fan of the Australian alternative rock group The Go-Betweens.

He named the McLennan-Forster corporation featured in the fourth season of 24 after the group's central members, Robert Forster and Grant McLennan.

[citation needed] His wife, Lisa Miller Katz, was the casting director on Everybody Loves Raymond.